In Reply to: What is the pinging I hear when I first turn on my amps? posted by 2bkurius on December 18, 2011 at 09:29:18:
Many vintage "hot" running amps have this happen after turn-off. So, turning off, similar sounds might be the glass cooling down, while contracting...
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Follow Ups
- the pinging could be the glass "expanding" during warm-up... - Interstage Tranny 18:16:05 12/22/11 (0)